just set the root directory of sever in nginx to / data/www/11/77/3e/

nginxserver/data/www/,php,mkdir -p ./11/aa/bb

,nginx
:https://img.codeshelper.com/upload/img/2021/03/21/13m0yjdqmga11581.jpg
/data/www/11/aa/bb/11aabbee38db401fcec7e4ff2d6008263c1593b14c.jpg

nginx
server {
    listen 80;
    server_name  img.xxx.com;
    root   /data/www;
    
    charset utf-8;
    
    access_log  logs/host.access.log  main;
     
    location ~ .*\\.(gif|jpg|jpeg|bmp|png|ico|txt|js|css)$   
    {  
        rewrite ^([a-z0-9A-z]{2})([a-z0-9A-z]{2})([a-z0-9A-z]{2})(.*) /data/www/$1/$2/$3/$1$2$3$4
    }
}